09-03-2017 09:13 AM - edited 09-05-2017 06:11 AM
The PC died suddenly, no sign of life at all (not even the motherboard standby power LED).
Tested by progressively removing everything attached to motherboard and powering up each time. Only when I removed the CPU did the standby LED finally light up, but the chip in question also started glowing and smoking.
Motherboard: MS-7557 Ver 1.00 , HP spare part no: 531991-001.
And subsidiary question: given the described symptoms, how likely is the CPU itself to be dead?
09-06-2017 03:19 PM
Never mind, I found out by buying another board.
The chip is a Richtek RT9199 regulator chip.
And to answer my second question: it looks like the CPU is dead :(.